======================== unified (from filesystem) ========================
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                                        'duration'  '199'
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                                      'lastfmtags'  "['indie', 'pop rock', 'female vocalists', 'pop', 'rock']"
                             'musicbrainz_albumid'  ''
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                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  '12'
                                            'date'  '2008'
                                        'comments'  ''
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rest: ''

======================== rawer (from filesystem) ========================

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'TBPM' (BPM (beats per minute))                     '131'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio'
'TDOR' (Original release time)                      '2008'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'Waking Up in Vegas'
'TKEY' (Initial key)                                '7B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Katy Perry'
'TPE2' (Band/orchestra/accompaniment)               'Katy Perry'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Parlophone'
'TRCK' (Track number/Position in set)               '3/12'
'TSO2'                                              'Perry, Katy'
'TSOP' (Performer sort order)                       'Perry, Katy'
'TSRC' (ISRC (international standard recording code))  'USCA20802541/USCA20902024'
'TXXX:Acoustid Id'                                  '83e87b8f-2f4a-488b-8212-3932751697ad'
'TXXX:Artists'                                      'Katy Perry'
'TXXX:BARCODE'                                      '724354050428'
'TXXX:CATALOGNUMBER'                                '7243 5 40504 2 8'
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'TXXX:MusicBrainz Album Id'                         '1eea1ec2-7bda-4fe6-b284-c214f8e43d8e'
'TXXX:MusicBrainz Album Release Country'            'XE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '122d63fc-8671-43e4-9752-34e846d62a9c'
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'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['indie', 'pop rock', 'female vocalists', 'pop', 'rock']
'TXXX:originalyear'                                 '2008'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.19 dB'
'TXXX:replaygain_track_peak'                        '0.282605'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'40e19d92-b212-4915-970a-2ce3b8169d7d')

========================== row from database ==========================
                                              'id'  1349608
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/Katy Perry - One of the Boys/Katy Perry - 03  - Waking Up In Vegas.mp3
                                         'working'  None
                                         'bitrate'  234
                                    'duration_sec'  199
                                           'genre'  electronic-generic or radio
                                        'filesize'  5821339
                                           'mtime'  1642081345
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted 03 In electronic generic or radio
                                      'tag_artist'  Katy Perry
                                     'tag_release'  One of the Boys
                                       'tag_title'  Waking Up in Vegas
                                             'bpm'  131.0
                                    'search_title'  'in':3 'up':2 'vegas':4 'waking':1
                                   'search_artist'  'katy':1 'perry':2
                                  'search_release'  'boys':4 'of':2 'one':1 'the':3
                                     'search_rest'  '00poprockelectronic':1 'electronic':4 'generic':5 'in':3 'or':6 'radio':7 'unsorted':2
                                    'search_combo'  '00poprockelectronic':11 'boys':10C 'electronic':14 'generic':15 'in':3A,13 'katy':5B 'of':8C 'one':7C 'or':16 'perry':6B 'radio':17 'the':9C 'unsorted':12 'up':2A 'vegas':4A 'waking':1A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  ['indie', 'pop rock', 'female vocalists', 'pop', 'rock']
                                        'tag_date'  2008
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1642081344.719646  (2022-01-13 14:42:24)
                             'size'  5821339